Telecommunications tray assembly

ABSTRACT

A modular multi-positionable tray assembly ( 420 ) for mounting within a chassis ( 10 ) of a telecommunications panel ( 100 ) is disclosed. The multi-positionable tray assembly ( 420 ) may include support arm structure ( 423 ) having a first support arm ( 424 ) and a second support arm ( 480 ) that pivotally supports a tray ( 422 ) and that allows the tray assembly ( 420 ) to be installed and removed from the chassis ( 10 ). The tray ( 422 ) and the support arm structure ( 423 ) cooperatively define a cable routing pathway ( 208 ) that extends through a pivot axis (A 1 ) defined by the tray and the support arm. To protect the cables ( 300 ) and to increase accessibility of cables ( 300 ) within the portion of the cable routing pathway ( 208 ) defined by the tray ( 422 ), a bend radius limiter ( 460 ) can be provided that is rotatably mounted to the tray ( 422 ). The tray ( 422 ) can also be provided with attachment features for allowing the tray ( 422 ) to accept various telecommunications components, such as splice trays and splitter trays.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No. 17/304,075, filed Jun. 14, 2021. U.S. patent application Ser. No. 17/304,075 is a divisional of U.S. patent application Ser. No. 16/707,819, filed Dec. 9, 2019, now U.S. Pat. No. 11,036,019. U.S. patent application Ser. No. 16/707,819 is a divisional of U.S. patent application Ser. No. 15/512,036, filed on Mar. 16, 2017, now U.S. Pat. No. 10,502,917; which is a National Stage Application of PCT/EP2015/071196, filed on Sep. 16, 2015; which claims benefit of U.S. Patent Application Ser. No. 62/170,571, filed on Jun. 3, 2015, and claims benefit of U.S. Patent Application Ser. No. 62/186,034, filed on Jun. 29, 2015, and claims benefit of U.S. Patent Application Ser. No. 62/051,093, filed on Sep. 16, 2014, the disclosures of which are incorporated herein by reference in their entireties. To the extent appropriate, a claim of priority is made to each of the above disclosed applications.

FIELD OF THE INVENTION

The present invention relates to telecommunications panels and cable bend control guides, patch cord supports, and hinges adapted to be used in various telecommunications panels.

BACKGROUND

Numerous telecommunications panels exist today and are used in various equipment applications. Conventional telecommunications panels include hinges that are designed to allow a tray to be rotated out of the telecommunications panel. By rotating the tray out of the telecommunications panel, access is provided to rear portions of a termination field. Such trays may include cable management structures that aid in organizing and managing telecommunications cables routed to and away from the telecommunications panel.

SUMMARY

Aspects of the disclosure are directed to a multi-positionable tray assembly for mounting within a chassis of a telecommunications panel. In one aspect, the multi-positionable tray assembly includes a tray and a support arm. The tray is configured to support at least one cable management structure while the support arm is connected to and supports the tray at a pivot joint. This structure allows the tray to be rotatable about the pivot joint at a pivot axis between a folded position and an access position. In one aspect, the support arm is configured for removable attachment to the chassis such that the multi-positionable tray assembly can be placed in a removed position away from the chassis and an installed position within the chassis.

In one embodiment, the multi-positionable tray assembly includes a tray that defines a wall structure having a top wall, a back wall, and a bottom wall that together define a channel having an open face. The tray can be further provided with a bend radius limiter that defines a curved surface for limiting the degree to which a cable can bend as the cable extends from the support arm, through the pivot joint, and into the channel of the wall structure. In one aspect, the bend radius limiter is pivotally mounted to the tray such that the bend radius limiter is rotatable between an open position and a closed position in which the open face is at least partially covered by the bend radius limiter in the closed position.

A method of routing a cable through a multi-positionable tray assembly is also disclosed. The method can include the steps of: rotating a tray of a tray assembly with respect to a support arm to place the tray in an access position; rotating a bend radius limiter with respect to the tray to an open position to expose an open face of a wall structure defining a channel; routing a cable through the support arm and into the wall structure channel; rotating the bend radius limiter to a closed position to at least partially block the channel open face; and rotating the tray to a folded position with respect to the support arm.

A modular multi-positionable tray assembly is also disclosed that has a tray and a support arm structure having a first support arm and a second support arm. In one aspect, the first support arm is configured for removable attachment to the chassis such that the multi-positionable tray assembly can be placed in a removed position away from the chassis and an installed position within the chassis. In one aspect, the second support arm is removably connected to and supports the tray. The second support arm is also connected to the first support arm at a pivot joint such that the tray is rotatable about the pivot joint at a pivot axis between a folded position and an access position. As configured, the tray, the first support arm, and the second support arm cooperatively define a cable routing pathway.

A cable management feature can also be provided with the modular multi-positionable tray assembly. To accommodate this configuration, the second support arm can be provided with a mounting structure to which the cable management feature can be pivotally and removably attached. The cable management feature can be rotatable between a first position in which a portion of the pivot joint is at least partially covered by the cable management feature and a second position in which the portion of the pivot joint is uncovered.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of the description, illustrate several aspects of the present disclosure. A brief description of the drawings is as follows:

FIG. 1 is a perspective view of an example telecommunications panel including a plurality of multi-positionable tray assembly in accordance with principles of the present disclosure.

FIG. 2 is a top view of the telecommunications panel of FIG. 1 .

FIG. 3 is a perspective view of the telecommunications panel of FIG. 1 , with one of the multi-positionable tray assemblies in a removed position.

FIG. 4 is a perspective view of the chassis of the telecommunications panel of FIG. 1 .

FIG. 5 is a perspective view of one of the multi-positionable tray assemblies of FIG. 1 .

FIG. 6 is a perspective view of the multi-positionable trays of FIG. 5 with the various cable management structures removed from the tray.

FIG. 7 is a perspective view of the multi-positionable tray assembly of FIG. 6 mounted to the chassis in an installed position and rotated into an access position.

FIG. 8 is a cross-sectional perspective view of one of the multi-positionable tray assemblies of FIG. 1 shown in an installed position and rotated into an access position.

FIG. 9 is a perspective view of a tray of one of the multi-positionable tray assemblies of FIG. 1 .

FIG. 10 is a top view of the tray of FIG. 9 .

FIG. 11 is a front view of the tray of FIG. 10 .

FIG. 12 is a front-right perspective view of a support arm of one of the multi-positionable trays of FIG. 1 .

FIG. 13 is a front-left perspective view of the support arm of FIG. 12 .

FIG. 14 is a top view of the support arm of FIG. 12 .

FIG. 15 is a bottom view of the support arm of FIG. 12 .

FIG. 16 is an end view of the support arm of FIG. 12 .

FIG. 17 is a perspective photographic view of a support arm of FIG. 12 with cables routed within a cable routing path defined by the support arm.

FIG. 18 is a perspective photographic view of a support arm of FIG. 12 with cables of FIG. 17 wrapped around the first end of the support arm about the pivot joint.

FIG. 19 is a perspective view of the telecommunications panel of FIG. 1 , with additional cable mounting features mounted thereon.

FIG. 20 is a top view of a second embodiment of a multi-positionable tray assembly usable in the system of FIG. 1 ;

FIG. 21 is a top view of the tray assembly shown in FIG. 20 , in the access position.

FIG. 22 is a top view of the tray assembly shown in FIG. 20 , in the access position with a bend radius limiter in an open position.

FIG. 23 is an exploded perspective view of the tray assembly shown in FIG. 20 .

FIG. 24 is a perspective view of the tray of the tray assembly shown in FIG. 20 , with the bend radius limiter and support arm removed.

FIG. 25 is a perspective view of the tray of the tray assembly shown in FIG. 20 , with the support arm removed.

FIG. 26 is a perspective view of the tray assembly shown in FIG. 20 , in the folded position.

FIG. 27 , is a rear perspective view of the bend radius limiter of the tray assembly shown in FIG. 20 .

FIG. 28 is a front perspective view of the bend radius limiter shown in FIG. 27 .

FIG. 29 is a first end view of the bend radius limiter shown in FIG. 27 .

FIG. 30 is a second end view of the bend radius limiter shown in FIG. 27 .

FIG. 31 is a first side view of the bend radius limiter shown in FIG. 27 .

FIG. 32 is a second side view of the bend radius limiter shown in FIG. 27 .

FIG. 33 is a front view of the bend radius limiter shown in FIG. 27 .

FIG. 34 is a rear view of the bend radius limiter shown in FIG. 27 .

FIGS. 35-37 show the bend radius limiter shown in FIG. 27 being sequentially moved towards the open position from the closed position.

FIGS. 38-41 show the bend radius limiter shown in FIG. 27 being sequentially moved towards the closed position from the open position.

FIG. 42 is a perspective view of a second embodiment of a bend radius limiter.

FIG. 43 is a perspective view of the bend radius limiter shown in FIG. 42 and a portion of a second embodiment of a tray usable with the system of FIG. 1 .

FIG. 44 is a perspective view of the tray assembly shown in FIG. 20 , with the bend radius limiter removed.

FIG. 45 is top view of the tray assembly shown in FIG. 44 .

FIG. 46 is a perspective view of the tray assembly shown in FIG. 44 , with the tray in an access position.

FIG. 47 is a perspective view of the tray assembly shown in FIG. 44 and a cable management structure.

FIG. 48 is a perspective view of the tray assembly shown in FIG. 44 with the cable management structure shown in FIG. 47 installed within the tray.

FIG. 49 is a front perspective view of a mounting base for a cable management tray.

FIG. 50 is a rear perspective view of the mounting base shown in FIG. 49 .

FIG. 51 is an exploded perspective view of the mounting base of FIG. 49 and a plurality of cable management trays.

FIG. 52 is a perspective view of the cable management trays shown in FIG. 51 mounted to the mounting base shown in FIG. 49 .

FIG. 53 is a front perspective view of the tray shown in FIG. 44 with the mounting base shown in FIG. 49 installed within the tray and with the cable management trays aligned for installation onto the base.

FIG. 54 is a rear perspective view of the tray shown in FIG. 44 with the mounting base shown in FIG. 49 installed within the tray and with the a cable management trays aligned for installation onto the base.

FIG. 55 is a front perspective view of the tray assembly shown in FIG. 44 with the mounting base shown in FIG. 49 installed within the tray and with a second configuration of cable management trays installed onto the base.

FIG. 56 is a front perspective view of the tray assembly shown in FIG. 44 with a second embodiment of a patch panel frame aligned for installation onto the tray.

FIG. 57 is a front perspective view of the tray assembly shown in FIG. 44 with the patch panel frame shown in FIG. 56 installed onto the tray.

FIG. 58 is an exploded perspective view of the tray assembly shown in FIG. 44 with the support arm structure removed from the main body of the tray.

FIG. 59 is a top view of the tray of the tray assembly shown in FIG. 44 .

FIG. 60 is a side view of the tray shown in FIG. 59 .

FIG. 61 is a perspective view of a first arm of the support arm assembly which is part of the tray assembly shown in FIG. 44 .

FIG. 62 is a top view of the first arm shown in FIG. 61 .

FIG. 63 is a bottom view of the first arm shown in FIG. 61 .

FIG. 64 is a side view of the first arm shown in FIG. 61 .

FIG. 65 is an end view of the first arm shown in FIG. 61 .

FIG. 66 is a perspective view of a pivotable cable management feature mounted to the tray assembly shown in FIG. 44 , with the cable management feature rotated to a first position.

FIG. 67 is a perspective view of the pivotable cable management feature shown in FIG. 66 , with the cable management feature rotated to a second position.

DETAILED DESCRIPTION

Reference will now be made in detail to exemplary aspects of the present disclosure that are illustrated in the accompanying drawings. Whenever possible, the same reference numbers will be used throughout the drawings to refer to the same or similar parts.

Telecommunications Panel—General

Referring now to FIGS. 1 and 2 , a telecommunications panel 100 (e.g., an enclosure, an optical distribution frame, etc.) is illustrated according to the principles of the present disclosure. As further illustrated at FIG. 1 , the telecommunications panel 100 may be included in a cabinet 200. The telecommunications panel 100 and/or the cabinet 200 may be used for various purposes in telecommunications systems. For example, housing a cable management structure 102 including, for example, stacked splice trays 112 and a patch panel 104. In one aspect, patch cords 302, 304 (i.e., patch cables, connectorized fiber optic cables, etc.) may enter the telecommunications panel 100 and/or the cabinet 200 and be interconnected at a patch panel 104. The patch panel 104 may include a plurality of fiber optic adapters 108. Fiber optic connectors 110, 114 that terminate ends of the patch cords 302, 304 may connect with the fiber optic adapters 108 of the patch panel 104. The interconnections at the patch panel 104 may be rearranged from time-to-time, as desired, for changing configurations of the telecommunications system. The telecommunications panel 100 may further hold splitters, filters, and various other telecommunications components. An exemplary telecommunications system 1 is shown and described in U.S. Provisional Patent Application 62/051,093, filed on Sep. 16, 2014, the entirety of which is incorporated by reference herein.

Chassis 10 and Multi-Positionable Tray Assembly 20

The telecommunications panel 100 may include a chassis 10 to which a plurality of stacked multi-positionable tray assemblies 20, 420 may be removably attached. The multi-positional tray assembly 20 is further shown at FIGS. 6-16 while the tray assembly 420 is illustrated at FIGS. 20-41 . As many of the features of trays 20 and 420 are similar, the following description for tray assembly 20 is generally applicable for tray assembly 420. In one aspect, the multi-positionable tray assembly 20 includes a tray 22 (e.g., a sub-rack) and a support arm 24 that are pivotally connected to each other via a pivot joint 26 that allows the tray assembly 20 to be moved between a folded position 200 and an access position 202. The pivot joint 26 is formed by the interface between an upper joint arm 28 of the support arm 24 and an upper joint extension 32 of the tray 22 and by the interface between a lower joint arm 30 of the support arm 24 and a lower joint extension 34 of the tray 22. The interfaces can be secured together by a variety of means, for example, a snap-fit type connection via protrusions and corresponding recesses or by a connection utilizing fasteners. As depicted, the pivot joint 26 represents the connection between the tray 22 and the support arm 24 to the chassis 10 and defines a vertical hinge with an axis A1 for the multi-positionable tray assembly 20.

As most easily seen at FIG. 4 , the chassis 10 includes a rear side 10 a extending between a first side 10 c and a second side 10 d. The chassis 10 also includes an open front side 10 b for slidably receiving the tray assembly 20. The chassis may include a number of features to facilitate the mounting of the tray assembly 20 to the chassis 10 from a removed position 206 to an installed position 204. For example, the chassis 10 may be provided with a plurality of attachment slots 12 at the first and second sides 10 c, 10 d that are configured to engage with corresponding attachment guide members 40 located on the support arm 24. In the embodiment shown, the attachment slots 12 and the guide members 40 extend in a direction D1 that is parallel to the first and second sides 10 c, 10 d of the chassis 10. This configuration allows the guide members 40 to engage with the attachment slots 12 when the tray assembly 20 is inserted into the chassis 10 into an installed position 204. In one example, the guide members 40 have a T-shape cross-section to more securely engage the attachment slots 12 by preventing rotation of the support arm 24 with respect to the side 10 c or 10 d of the chassis 10 to which the support arm 24 is attached.

The chassis 10 can also be provided with features to secure the tray assembly 20 within the chassis 10 so that the tray assembly 20 is retained in the installed position 204. For example, the chassis 10 can be provided with a first latch recess 14 configured to receive a first latch member 36 of the tray assembly 20. In the embodiment shown, the support arm 24 is provided with a depressible first latch member 36 that initially deflects as the tray assembly 20 is being pushed into the installed position 204 and then snaps into the latch recess 14 once the tray assembly 20 is fully installed to form a snap-fit type of connection. The tray assembly 20 can be released from the chassis 10 by depressing the latch member 36 and pulling the tray assembly out of the chassis 10.

The chassis 10 can also be provided with features to secure the tray 22 of the tray assembly 20 to the chassis 10 so that the tray assembly 20 is retained in the folded position 200. For example, the chassis 10 can be provided with a second latch recess 16 configured to receive a second latch member 38 of the tray assembly 20. In the embodiment shown, the tray 22 is provided with a second depressible latch member 38 that initially deflects as the tray assembly 20 is being rotated into the folded position 200 and then snaps into the latch member 38 once the tray assembly 20 is fully rotated to form a snap-fit type of connection. The tray 22 can be released from the chassis 10 by depressing the latch member 38 and rotating the tray 22 away from the chassis 10 towards the access position 202.

The chassis 10 can also be configured to support other components of the telecommunications panel 100, as desired. For example, the chassis 10 can be configured to support cable management features 44 and 54. In the embodiment shown, cable management features 54 and 44 guide patch cords 304 extending from the tray assembly 20. The chassis 10 may also be provided with one or more features for allowing cable to enter the chassis 10, for example cable routing slot 46 and cable routing aperture 48.

In addition to the previously described aspects of the support arm 24, the support arm 24 further includes a first end 24 a and a second end 24 b having an exterior side 24 d, a top wall 24 e, and a bottom wall 24 f. In the embodiment presented, the walls 24 e, 24 f and the side 24 d together form a channel-like structure having an open interior side 24 c within which a portion of a cable pathway 208 is formed. Adjacent the first end 24 a are the upper and lower joint arms 28, 30 that form a part of the pivot joint 26. In one aspect, the support arm 24 is provided with a plurality of cable guides 42 to ensure that cables 300 routed within the support arm 24 are adequately retained.

In addition to the previously described aspects of the tray 22, the tray 22 further includes a rear side 22 a and a front side 22 b that extend between opposite first and seconds sides 22 c, 22 d. As shown, the second side 22 d is provided with a curved shape such that the rear sidewall 22 a is shorter than the front side 22 b to allow for clearance between the tray 22 and the chassis 10 as the tray 22 is rotated out of the chassis 10. The tray 22 may also be provided with a cover 23 for protecting the components and fiber supported within the tray 22. In one aspect, the tray 22 includes a pair of hinges 52 for rotatably supporting an access door or cover. The location of the door and hinges 52 can define a front plane A4 of the tray 22 which is shown as being parallel to the rear side 22 a and orthogonal to the first and second sides 22 c, 22 d.

The tray 22 further defines the cable routing pathway 208 via the walls forming the first side 22 c and the rear side 22 a of the tray 22, along with a bottom portion 22 h of the tray 22. An interior wall structure 22 e also functions to define the cable routing pathway 208, as do radius guides 22 f which prevent the cables 300 from kinking or bending too severely. The cables 300 can be further retained within the cable routing pathway 208 via a plurality of cable guides 22 g located at the top of the tray 22.

As discussed previously, the cable routing pathway 208 passes between the space defined between the upper and lower joint extensions 32, 34 of the tray 22. Because the upper joint extension 32 engages with the upper joint arm 28 and the lower joint extension 34 engages with the lower joint arm 30, the pivot joint 26 is formed without the need for any structure between the upper and lower joint extensions 32, 34. Accordingly, this space can be utilized to define the cable routing pathway 208 as it extends from the support arm 24 and the tray 22. The upper and lower joint extensions 32, 34 also serve to constrain the cables 300 as the cables traverse between the support arm 24 and the tray 22. Accordingly, the cables 300 within the cable routing pathway 208 enter the tray 22 through the pivot joint 26 in an orientation that is perpendicular to the rotation axis A1. FIGS. 17 and 18 show an example of a number of cables 300 passing through the pivot joint 26. A key benefit to allowing the cables 300 to be routed through the pivot joint 26 rotational axis A1 is that the routing length of the cables 300 can remain relatively unchanged as the tray 22 is rotated between the folded and access positions 200, 202. Thus, the rotation of the tray 22 does not cause undue tension on the cables 300 as the tray 22 is being rotated about the pivot axis A1.

Referring to FIG. 8 , it can be seen that above described configuration results in the cable routing pathway 208 extending from the second end 24 b of the support arm 24 to the first end 24 a of the support arm 24, across the pivot joint 26, and along the first side 22 c and rear side 22 a of the tray 22. The cables 300 can further extend from the second end 24 b of the support arm along the rear side 10 a of the chassis 10 towards the second end 10 d, and through the cable routing aperture 48.

In the embodiment presented, the tray 22 is configured to hold a plurality of splice trays 112 or other components to which the cables 300 can be routed along the rear side 22 a of the tray 22. In the embodiment shown, the cables 300 extend to the splice trays 112 from which patch cords 302 extend as cabled ends 110 a of fiber optic connectors 110. The fiber optic connectors 110 are shown as being connected to the first sides 108 a of adapters 108. As shown, the adapters 108 are arranged along a transverse axis A2 which generally extends between the sides 22 c and 22 d of the tray 22. In one embodiment, the adapters 108 in the patch panel 104 are supported by a patch panel frame 106 extending along transverse axis A2 from a first end 106 a proximate first side 22 c to a second end 106 b proximate second side 22 d. Fiber optic connectors 114 are shown as being connected to the second sides 108 b of the adapters 108. The fiber optic connectors 114 are shown as having cabled ends 114 a which form patch cords 304 which can be routed through cable management features 44 and 50 to the outside of the telecommunications panel 100.

As shown, the adapters 108 and connectors 110, 114 are aligned along an axis A3 which is shown as forming an oblique angle with the transverse axis A2. This configuration is advantageous over configurations in which the axes A2 and A3 are generally orthogonal in that less overall depth (i.e. the distance between the rear side 22 a and the front side 22 b) is required of the tray 22 in order to accommodate the cable management structures. Additionally, by disposing the cabled ends 114 a of the connectors 114 at an angle towards the end of the telecommunications panel 100 at which the patch cords 304 exit via cable management feature 44, less turning is required of the cords and thus bend radius protection is enhanced. Likewise, by disposing the cabled ends 110 a of the connectors 110 at an angle towards the splice trays 112, less turning is required of the cords and thus bend radius protection is enhanced in this manner as well. Space allocation can be further enhanced by arranging the patch panel frame 106 such that axis A3 is not parallel to the front plane A4 or rear side 22 a. For example, the patch panel 104 and frame 106 can be oriented such that axis A3 is at an angle from about 2 to about 4 degrees, and preferably about 2.5 degrees, with respect to the axis A4 and the rear side 22 a of the panel 22. This configuration allows for there to be a greater distance D1 provided between the patch panel 104 and the front face plane A4 of the tray 22 at the first side 22 c, as compared to the corresponding distance D2 at the second side 22 d of the tray 22. Likewise, this configuration also allows for there to be a greater distance D3 provided between the patch panel 104 and the splice tray 112 of the tray 22 at the second side 22 d, as compared to the corresponding distance D4 at the first side 22 c of the tray 22. As the patch cords 302 are greater towards the second end 22 d of the tray 22 and the patch cords 304 are greater in number towards the first end 22 c of the tray 22, the increased distances D1 and D3, respectively, provide for additional cable routing space where it is most needed and allows for a more compact construction of the tray 22.

It is noted that the drawings show a configuration in which the support arm 24 and pivot joint 26 are proximate the first side 22 c of the tray 22. This configuration results in the tray 22 being pivotable from the first side 22 c of the tray 22. However, the support arm 24 and tray 22 can be produced as mirror images of the embodiment shown in the drawings, such that the support arm 24 and pivot joint 26 are located proximate the second side 22 d of the tray 22 which would allow for the tray 22 to be rotated about the second side 22 d of the tray 22.

Tray Assembly 420

Referring to FIGS. 20-67 , a second embodiment of a tray assembly 420 is shown, as noted previously. As many of the concepts and features are similar to the first embodiment of the tray assembly 20 shown in FIGS. 5-16 , the description for the first embodiment is hereby incorporated by reference for the second embodiment. Where like or similar features or elements are shown, the same reference numbers will be used where possible (e.g. reference number 422 instead of reference number 22 for the tray). The following description for the second embodiment will be limited primarily to the differences between the first and second embodiments.

The second embodiment of the tray assembly 420 is different from tray assembly 20 in that the tray assembly 420 includes a repositionable bend radius limiter 460 which can be attached to the tray 422, in that the tray assembly 420 has a multiple piece support arm structure 423, in that a pivotable cable management part 454 is provided on the support arm structure 423, in that the interior bay of the tray 422 has attachment features for accepting different types of accessories, such as splice trays and splitters. The tray 422 also has a modified latch member 438 for securing the tray 422 into the chassis 10 when in the folded position.

The tray 422 is also provided with modified receiving structures 440, 442 for receiving variously configured patch panel frames, such as the patch panel frame 506 shown in FIGS. 56 and 57 which has cable management features 550 and is configured for use with LC-type adapters. As shown, the cable management feature 550 can be a singly formed component (i.e. a single molded plastic part) that is mounted from the top and into a slot of the patch panel frame 506. The cable management feature 550 has a front portion 550 a that extends towards the front end 422 b of the tray 422 and forms a largely enclosed structure with an opening at the top through which cables can be inserted. The cable management features 550 also has a rear portion 550 b that extends towards the rear end 422 a of the tray 422. The rear portion 550 b has a horizontal portion 550 c that extends across the top plane of the tray assembly 420 and acts to hold the cables within the tray 422 such that they do not rise beyond the top of the tray 422. A downwardly extending portion 550 d is also provided to further secure the cables. This configuration ensures that sufficient clearance exists between vertically adjacent tray assemblies 420 without interference between cables within one tray assembly 420 and the bottom of an above tray assembly 420. As shown, three cable management features 550 are shown. However, more or fewer may be utilized depending upon application.

In one aspect of the disclosure, the support arm structure 423 includes the previously described first support arm 424 and a second support arm 480. The second support arm 480 is configured to pivotally connect to the first support arm 424 with the same general pivot location 426 functionality as previously described and has many of the features that were previously integral to the tray 422. However, the second support arm 480 is separable from the tray 422 which provides modularity in that the same support arm structure 423 can be used with differently sized and configured trays without the need for modification of the support arm structure 423. To accommodate this configuration, the wall structure 422 c of the tray 422 is provided with a modified configuration in which the wall structure 422 c is provided with a plurality of lower lugs 490 and a plurality of upper lugs 492 that together define a receiving channel 494 for accepting the second support arm 480. A modified arrangement of radius limiting guides 422 f is also provided. Additionally, instead of providing the wall structure corresponding to wall 22 e of the previous embodiment, the tray assembly 420 achieves the function of this wall with the bend radius limiter 460 (discussed below) which is pivotally attached to the tray 422 to cover an opening defined by the second support arm 480.

As shown, the lower lugs 490 of the second support arm are each provided with a base portion 490 a, wherein at least one of the lower lugs 490 additionally includes an extension portion 490 b that forms a recess 490 c with the base portion 490 a. Similarly, each of the upper lugs 492 are provided with a base portion 492 a, wherein at least one of the upper lugs additionally includes an extension portion 492 b that forms a recess 492 c with the base portion 492 a. Collectively, the base portions 490 a, 492 a and the recesses 490 c, 492 c define the receiving channel 494. In one aspect, the base portions 490 a are aligned along a first axis A while the base portions 492 a are aligned along a second axis B. In the exemplary embodiment shown, the axis A is disposed at an oblique angle to the axis B such that the receiving channel 494 tapers from a larger dimension nearest the front side 422 b to a narrower dimension nearest the rear side 422 a of the tray 422.

The second support arm 480, which is shown in further detail at FIGS. 24, 58 , and 61-65, includes a top wall 482, a back wall 483, and a bottom wall 484 that together define a channel 480 a having an open face 480 b. A mounting structure 496 is provided on the back wall 483 and is configured to be received into the receiving channel 494 defined by the tray 422. As shown, the mounting structure 496 includes a base portion 496 a extending from the back wall 483 and a flange portion 496 b extending from the base portion 496 a to form a t-shaped structure having recesses 496 c and 496 d. The base portion 496 a and the flange portion 496 b are dimensioned such that the flange portion 496 b can extend into the recesses 490 c, 492 c of the lower and upper lugs 490, 492, respectively. Likewise, the extension portions 490 b, 492 b of the lugs 490, 492 extend into the respective recesses 496 c, 496 d of the mounting structure 496.

The flange and base portions 496 a, 496 b are also provided with a tapered shape matching the angle “a” of the receiving channel 494. The tapered shape allows for greater clearance when initially aligning the second support arm 480 to the tray 422, as shown at FIG. 58 , and then allows for a relatively tight fit once the second support arm 480 is fully inserted into the receiving channel 494. To secure the second support arm 480 onto the tray 422, a post or fastener can be inserted through an aperture 498 disposed on the mounting structure 496 which prevents the second support arm 480 from being removed from the receiving channel 494 by abutting against the lugs 490, 492 nearest the rear side 422 a of the tray 422.

To further aid in alignment, the tray 422 can be provided with a tab 446 which is received by a slot or channel 497 in the bottom wall 484 of the second support arm 480. Alternatively, the tray 422 can be provided with a slot and the second support arm 480 could be provided with an extension tab. The second support arm 480 is also shown as having an alignment tab 485 which is received by a structure 422 g of the tray 422. Additional alignment features may also be used, such as cooperating pins and cavities for receiving the pins.

The second support arm 480 can also be provided with a support member 487 extending from the bottom wall 484. The support member 480 is received into the first support arm 484 and rests above the bottom wall 424 f (see 24F in FIG. 13 ) of the support arm 424. As such, the bottom wall 424 f can provide support to the second support arm 480 via the support member 487 to reduce sagging between the first and second support arms 424, 480. The support member 487 can be provided with a tapered bottom surface to enable the support member 487 to be more easily guided onto the top of the bottom wall 424 f when moving the tray assembly 420 into the folded position.

The second support arm 480 can also be provided with a mounting structure 499 to which a cable management part 454 can be rotatably attached. As shown, the mounting structure 499 is provided with a pair of pins 499 a configured to be received in corresponding recesses 454 a in the cable management part 454. It is noted that although the mounting structure 499 is shown as including pins 499 a, such pins could be located on the cable management part 454 with corresponding recesses provided on the mounting structure 499. Other types of pivotable or hinged connections may also be utilized. The cable management part 454, which is shown at FIGS. 66 and 67 , is also provided with a top wall 454 b and a bottom wall 454 c that extend from a back wall 454 d. A downwardly depending front wall 454 e is shown as extending from the top wall 454 b and an upwardly depending front wall 454 f is shown as extending from the bottom wall 454 c such that a channel 454 g is formed for allowing cables to be placed within an interior space 454 h defined by the walls 454 b, 454 c, 454 d, 454 e, and 454 f.

As configured, cables or patch cords 304 extend from the tray 422 into the interior space 454 h via a first opening 454 i and exit the interior space 454 h via a second opening 454 j. The back wall 454 d acts as a bend radius limiter for the patch cords 304 which extend toward the cable management feature 44. As the tray 422 is being rotated between the access and folded positions, the cable management part 454 can automatically rotate about the mounting structure 499 between a first position (FIG. 66 ) and a second position (FIG. 67 ) to accommodate the resulting movement of the patch cords 304 such that bunching is minimized or prevented. To further accommodate cable movement, the back wall 454 d may be made longer than the front walls 454 e, 454 g such that the first and second openings 454 i, 454 j are non-parallel (i.e. the cable management part 454 has a generally trapezoidal shape).

In one aspect, the top wall 482 and bottom wall 484 of the second support arm 480 are each respectively provided with a plurality of attachment features 482 a, 484 a, such as notches or detents designed to retain corresponding attachment features on the bend radius limiter 460. As shown, three attachment features 482 a are shown on the top wall 482 while three attachment features 484 a are shown on the bottom wall 484. However, more or fewer attachment features 482 a, 484 a may be utilized. It is also possible for the number of attachment features 482 a to be different from the number of attachment features 484 a. It is noted that although the tray 422 is shown as including notches, such notches or other attachment features configurations, could be provided on the bend radius limiter 460 with corresponding latch or attachment features being provided on the top and bottom walls 482, 484. Additionally, attachment features may be provided on only one of the top and bottom walls 482, 484 as well in some applications. In the particular embodiment shown, the middle attachment features 482 a, 484 a do not receive a latch connection and instead are used for guiding and alignment purposes.

In one aspect, the bend radius limiter ensures that the minimum radius to which the cables 300 may be safely bent during installation and use is not exceeded. To accommodate the bend radius limiter 460 in this embodiment, the second support arm 424 has a modified structure in comparison to the sidewall 22 c and 22 e of the tray 22. For example, the second support arm is configured such that the bend radius limiter 460 can be rotatably mounted to the tray and such that the bend radius limiter 460 can be secured to the wall structure 480 via a snap-fit connection to the wall structure 480. In contrast to the top loading design of tray 20, cables 300 are installed within the wall structure 480 from an open side 480 a that is closed off by the limiter 460. This closed position is shown at FIGS. 20, 21, and 25 . With this configuration, the bend radius limiter 460 can be rotated away from the cable pathway 208 for easier routing of the cables 300 and can then be secured to the wall structure 480 to retain the cables 300 within the cable pathway 208. This open position is shown at FIG. 21 .

The bend radius limiter 460, in the secured position, provides a smooth transition between the tray 422 and the support arm 424 across the location of the pivot hinge 426. The support arm 424 is provided with a rib, notch, or alignment feature 424 a for positively locating an end 460 c of bend radius limiter 460 to ensure that the transition between the interior channel defined by the support arm 424 and the bend radius limiter 460 is smooth. As such, the limiter 460 beneficially prevents the cables 300 from being stretched or sharply bent into straight segments extending between a portion of the support arm 424 and a portion of the tray 422.

The tray 420 is further provided with a mounting structure 486 to which the bend radius limiter 460 can be rotatably attached. As shown, the mounting structure 486 is provided with a pair of pins 486 a configured to be received in corresponding recesses in the bend radius limiter 460. It is noted that although the mounting structure 486 is shown as including pins 486 a, such pins could be located on the bend radius limiter 460 with corresponding recesses provided on the mounting structure 486. Other types of pivotable or hinged connections may also be utilized.

To retain the cables 300 within the channel defined by the walls 482, 483, 484 a pivotable or attachable retainer element 488 may be utilized which extends between walls 482 and 484. In an open position, the element 488 is rotated away from the open face 480 b such that cables can be placed in the channel. In the closed position, the element 488 is rotated within the channel such that the open face 480 b is at least partially blocked. The element 488 allows for the bend radius limiter 460 to be moved to the closed position without having to provide the necessary force or cable management features to retain the cables 300 within the channel. Similarly, the cables 300 can be retained within the channel when the limiter 460 is in the open position. The second support arm 480 may also be provided with an extension member 485 which bridges from the top wall to the radius limiting feature 422 f nearest the read wall 422 a of the tray 422 to further guide the cables 300 into the channel 480 a.

As most easily viewed at FIGS. 27-34 , the pivotable bend radius limiter 460 is shown in greater detail. As shown, the bend radius limiter 460 includes a main body 460 a extending between a first end 460 b and a second end 460 c. The main body 460 a is provide with a continuous, unitary construction defining a first segment 462, a second segment 464, a third segment 466, a fourth segment 468, and a fifth segment 470. It is noted that the main body 460 a can be characterized as having fewer or more than five segments.

As shown, the first segment 462 defines the first end 460 b and is provided with a mounting structure 472 having a pair of recesses 472 a. The recesses 472 a are configured to snap-fit onto the posts or pins 468 a of the mounting structure 486. Once mounted, the bend radius limiter 460 can rotate with respect to the tray 422 about an axis A5 defined by the pins 468 a. The first segment also includes a pair of attachment features 474 which are configured as latches that can snap-fit into the notches or attachment features 482 a, 484 a of the tray 422 most proximate to the mounting structure 486.

The second segment 464, which is located between the first segment 462 and the third segment 466, is configured to be relatively flexible about axes parallel to axis A5 to enable the bend radius limiter 460 to be bent away from the wall structure 480 even when the attachment features 474 proximate the mounting structure 486 are engaged with the corresponding attachment features 482 a, 484 a. This functionality can be most easily seen at FIG. 38 . As shown, the second segment 464 is made flexible by providing a series of transversely extending ribs 464 a that are interconnected by similarly extending sections 464 b of material having a reduced thickness, in comparison to ribs 464 a. This configuration allows for each section 464 b to act as a living hinge, and in a larger sense, allows the entirety of the second segment 464 to act as a living hinge between the first and third segments 462, 466. The second segment 464 is also shown as being provided with alignment protrusions 474 which extend into the middle attachment features 482 a, 484 a. The protrusions 474 act to maintain the vertical position (i.e. position in a direction parallel to the A5 axis) of the bend radius limiter 460.

It is noted that the first and second segment 462, 464 have a height that is less than that of the height of the third, fourth, and fifth segments 466, 468, 470 and that is less than the distance between the top and bottom walls 482, 484. This reduced height can allow for the accommodation of various structural features or aspects of the tray 422 and wall structure 480 and/or make routing of the cables 300 less cumbersome.

As shown, the third segment 466 extends between the second and fourth segments 464, 468. Similar to the second segment 464, the third segment 464 is configured to be relatively flexible about axes parallel to axis A5 to enable the bend radius limiter 460 to be bent away from the wall structure 480 even when the attachment features 474 proximate the mounting structure 486 are engaged with the corresponding attachment features 482 a, 484 a. This functionality can be most easily seen at FIGS. 38 and 39 , wherein it can be seen that both the second and third segments 464, 466 can be bent together in a generally continuous arc. As shown, the third segment 466 is made flexible by providing a series of transversely extending ribs 466 a that are interconnected by similarly extending sections 466 b of material having a reduced thickness, in comparison to ribs 466 a. This configuration allows for each section 466 b to act as a living hinge, and in a larger sense, allows the entirety of the third section 466 to act as a living hinge between the second and fourth segments 464, 468. Accordingly, the bend radius limiter 460 can be moved between the closed and open position with less overall clearance required in comparison to a similarly shaped element that is not flexible or cannot bend.

As shown, the fourth segment 468 extends between the third and fifth segments 466, 470 and is provided with a generally smooth surface. The fourth segment 468 is similar to the first segment 462 in that it is generally more rigid or stiffer than the second and third segments 464, 466. The fourth segment 468 also includes a pair of attachment features 476 which are configured as latches that can snap-fit into the notches or attachment features 482 a, 484 a of the tray 422 most proximate to the pivot joint 426.

The fifth segment 470 is the portion of the bend radius limiter 460 that performs the primary bend radius limiting functions and extends between the fourth segment 468 and the second end 460 c. The first through fourth segments 462 to 468 more primarily function to close off the open face 480 b of the wall structure 480 to retain cables 300 within the channel defined by the wall structure 480. As shown, the fifth segment 470 is provided with a curved or arc-shaped profile that defines a minimum bend radius for cables extending between the support arm 424 and the tray 422. As stated previously, the second end 460 c terminates the fifth segment 470 and locks into the rib 424 a of the support arm 424 when the tray 422 is rotated into the folded position to ensure a smooth transition between the support arm 424 and the fifth segment 470. The fifth segment 470 is also shown as being provided with alignment protrusions 477 which extend over the upper and lower joint extensions 432, 434 of the tray 422. The protrusions 477 act to maintain the vertical position (i.e. position in a direction parallel to the A5 axis) of the fifth segment 470 of the bend radius limiter 460 with respect to the tray 422.

Referring to FIGS. 35 to 40 , the functionality of the bend radius limiter 460 is further illustrated. As shown in FIG. 35 , the tray 422 has been rotated to the access position and the bend radius limiter 460 has been partially moved from the secured position towards the open position. At this point, the latches 476 have been disengaged from their corresponding notches 482 a, 484 a while the latches 474 remain engaged with their corresponding notches 482 a, 484 a. As can be seen, the fifth segment 470 is able to be pulled away from the wall structure 480 and pivot joint 426 by the flexibility of the second segment 464, and to a lesser extent the flexibility of the third segment 466.

As shown at FIG. 36 , the latches 474 have been disengaged and the bend radius limiter 460 has been rotated fully to the open position and away from the open face 480 b of the wall structure 480. FIG. 37 shows how a patch cord or cable 300 can now be routed into the interior channel defined by the wall structure 480 through the now unblocked open face 480 b. FIGS. 38 to 41 show the reverse process of moving the bend radius limiter 460 back into the closed position after the desired number of patch cords or cables 300 have been routed, which is essentially the reverse of the process shown in FIGS. 35-37 .

Referring to FIGS. 42 and 43 , and alternative bend radius limiter 460′ configuration is shown. As many of the concepts and features are similar to the first embodiment of the bend radius limiter shown in FIGS. 20-41 , the description for the first embodiment is hereby incorporated by reference for the second embodiment. Where like or similar features or elements are shown, the same reference numbers will be used where possible (e.g. reference number 460′ instead of reference number 60 for the limiter). The following description for the second embodiment will be limited primarily to the differences between the first and second embodiments.

The primary difference for limiter 460′ is that the limiter is provided with channels 461 that slide onto corresponding ribs 481 of a modified wall structure 480′. The limiter 460′ is provided with a flexible segment 462′ that allows the limiter 460′ to flex as the channels 461 slide along the ribs 481. This configuration allows the limiter 460′ to be in an extended and closed position to at least partially close off the open face 480 b. This configuration also allows the second end 460 c′ of the limiter 460′ to be slid towards the first end 460 b′ until the channels 461 disengage with the ribs 481, at which point the limiter 460′ can be rotated into the fully open position. In contrast to limiter 460, the limiter 460′ is also provided with a stiffening element 471 that bridges horizontally across and strengthens the bend radius limiting segment 470′. Element 471 could also be utilized in conjunction with limiter 460, if desired.

Referring to FIGS. 44-57 , it can be seen that the tray 422 is configured with multiple attachment feature arrangements 450 which enables the tray 422 to accept various types of telecommunications components. In one example, a pair of spaced attachment features 452 is provided at the rear sidewall 422 a of the tray 422. As shown, each attachment feature 452 is provided with a first extension 452 a and a second extension 452 b which together define a channel 452 c having an open slot 452 d. The first and second extensions 452 a, 452 b are shown as having an L-shaped cross section, but other shapes may be used. An attachment feature 455 is also provided at the rear sidewall 422 a and between the attachment features 452. As shown, the attachment feature 455 is defined by a recessed portion 455 a in the rear sidewall 422 a and in the bottom wall 422 h and defined by a tab portion 455 b located above the recessed portion 455 a in the rear sidewall 422 a. Another pair of attachment features 456 is provided on the bottom wall 422 h. The attachment features 456 are defined by a recess 456 a in the bottom wall 422 h and a latch portion 456 b adjacent the recess 456 a.

Attachment features 450 can also be provided at the front sidewall 422 j. For example, a pair of attachment features 457 can be provided, each of which is similarly configured to the attachment feature 455. As shown, each attachment feature 457 is defined by a recessed portion 457 a in the front sidewall 422 j and in the bottom wall 422 h and defined by a tab portion 457 b located above the recessed portion 457 a in the front sidewall 422 j. Yet another attachment feature 459 can be provided and is shown as being located between the attachment features 457. As shown, the attachment feature 459 is defined by a recess or depression in the front sidewall 422 j and is further defined by a laterally extending first tab 459 b and a laterally extending second tab 459 c that each extend across a portion of the recess or depression 459 a.

Referring to FIGS. 46 to 47 , it can be seen that a cable management structure 610 can be installed into the tray 422 and secured within the tray by attachment features 452, 455, and/or 459. The cable management structure 610 is shown as being formed as channel from a singular sheet of metal, but could be formed through plastic molding or by other means. As shown, the cable management structure 610 includes a main body 610 having a bottom portion 610 a from which a first sidewall 610 b and a second sidewall 610 c extend. A first top wall 612 d extends from the first sidewall 610 b while a second top wall 610 e extends from the second sidewall 610 c to form an interior space 610 f and a slot or gap 610 g through which cables can be moved into the interior space 610 f. The cable management structure main body 610 is also provided with a pair of extensions 612 within a cutaway portion 612 a of the main body 610 that are configured to extend into the attachment features 452. The main body 610 is also provided with an open portion 614 which engages with the tab 455 b to secure the main body 610 to the tray with a snap-fit type of connection. The main body 610 can be further provided with an open portion 616 that can be used to engage with the attachment feature 459.

In an alternative configuration for the tray assembly 420, a tray mount 620 can be provided that is configured to be snap-fit into the tray 422 and to support a plurality of trays, such as fiber optic splitter and/or splice trays. The tray mount 620 is shown in greater detail at FIGS. 49 to 50 while applications using the tray mount 620 as shown at FIGS. 51-55 . In one aspect, the tray mount 620 includes a main body 622 having a plurality of hinge bracket pairs 624 for rotatably supporting a tray. The main body 622 is further shown as including a first pair of extension members 626 configured to be received into the attachment features 452, a protrusion member 628 configured to be received into the recess 455 a and secured by the tab portion 455 b, and a pair of latch members 629 configured to engage with the attachment features 456. As shown, the extension members 626 are provided with a t-shaped cross section having a base portion 626 a that can be received through the slot 452 d of the attachment feature 452 and having a flange portion 626 b that can be received within the interior portion 452 c of the attachment feature 452. The protrusion member 628 is shown as having a cavity portion 628 into which a portion of the tab portion 455 b of the attachment feature 455 can extend to provide a snap-fit connection. The latch members 629 can be provided as an extension member 629 a having a deflectable free end with a catch member 629 b which engages with the latch portion 456 b of the attachment feature 456 which also enables the snap-fit connection.

With the above described configuration, the tray mount 620 can be easily aligned over the tray 422 and depressed downwardly for form a snap-fit connection into the tray 422. Referring to FIGS. 51 to 54 , it can be seen that the tray mount 620 can be utilized to support a plurality of splice trays 630. Referring to FIG. 55 , it can be seen that the tray mount 620 can be utilized to support a plurality of splitter trays 632. The tray mount 620 can be installed into the tray 422 before the trays 630 and/or 632 are attached to the tray mount 620 or can be installed after the trays 630 and/or 632 are attached to the tray mount 620.

While this invention has been particularly shown and described with references to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention encompassed by the appended claims. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention and other modifications within the scope. Any such modifications or variations that fall within the purview of this description are intended to be included therein as well. It is understood that the description herein is intended to be illustrative only and is not intended to be limitative.

LIST OF REFERENCE NUMERALS AND CORRESPONDING FEATURES

-   -   A1 pivot axis     -   A2 transverse axis     -   A3 longitudinal connection axis     -   A4 front face plane     -   A5 pivot axis for bend radius limiter     -   D1 first distance     -   D2 second distance     -   D3 third distance     -   D4 fourth distance     -   1 telecommunications cabinet     -   10 chassis     -   10 a rear side     -   10 b front side     -   10 c first side     -   10 d second side     -   12 attachment slots     -   14 first latch recess     -   16 second latch recess     -   20 multi-positionable tray assembly     -   22 tray     -   23 tray cover     -   22 a rear side     -   22 b front side     -   22 c first side     -   22 d second side     -   22 e interior wall structure     -   22 f radius guides     -   22 g cable guides     -   22 h bottom portion     -   23 tray cover     -   24 support arm     -   24 a first end     -   24 b second end     -   24 c open interior side     -   24 d exterior side     -   24 e top wall     -   24 f bottom wall     -   26 pivot joint     -   28 upper joint arm     -   30 lower joint arm     -   32 upper joint extension     -   34 lower joint extension     -   36 first latch member     -   38 second latch member     -   40 attachment guide members     -   42 support arm cable guides     -   44 cable management feature     -   46 cable routing slot     -   48 cable routing aperture     -   50 cable management feature     -   52 cover hinges     -   54 cable management feature     -   100 telecommunications panel     -   102 cable management structure     -   104 patch panel     -   106 patch panel frame     -   106 a first end     -   106 b second end     -   108 fiber optic adapters     -   108 a first side     -   108 b second side     -   110 first fiber optic connectors     -   110 a cabled end     -   112 splice tray     -   114 second fiber optic connectors     -   114 a cabled end     -   200 folded position     -   202 access position     -   204 installed position     -   206 removed position     -   208 cable routing pathway     -   300 cables     -   302 patch cord     -   304 patch cord     -   420 tray assembly     -   422 tray     -   422 a tray rear sidewall     -   422 b tray front side     -   422 c interior wall structure     -   422 f radius guides     -   422 g receiving structure     -   422 h bottom side     -   422 j tray front sidewall     -   423 support arm structure     -   424 support arm assembly     -   424 a alignment feature, rib     -   424 f bottom wall     -   426 pivot joint     -   432 upper joint extensions     -   434 lower joint extensions     -   438 latch member     -   440 receiving structure     -   442 receiving structure     -   446 extension tab     -   454 cable management part     -   454 a recesses     -   454 b top wall     -   454 c bottom wall     -   454 d back wall     -   454 e front wall     -   454 f front wall     -   454 g channel     -   454 h interior space     -   454 i first opening     -   454 j second opening     -   460 bend radius limiter     -   460 a main body     -   460 b first end     -   460 b′ first end     -   460 c second end     -   460 c′ second end     -   460′ alternative bend radius limiter     -   461 channels     -   462 first segment     -   464 second segment     -   464 a ribs     -   464 b section     -   466 third segment     -   466 a ribs     -   466 b section     -   468 fourth segment     -   468 a pins     -   470 fifth segment     -   470′ bend radius limiting segment     -   471 stiffening element     -   472 mounting structure     -   472 a recesses     -   474 attachment features, latches     -   474 protrusions     -   476 attachment features, latches     -   477 alignment protrusions     -   480 second support arm     -   480 a channel     -   480 b open face     -   480′ modified wall structure     -   481 ribs     -   482 top wall     -   482 a attachment features, notches     -   483 back wall     -   484 bottom wall     -   484 a attachment features, notches     -   485 alignment tab     -   486 mounting structure     -   486 a pins     -   487 support member     -   487 a tapered bottom surface     -   488 attachable retainer element     -   490 lower lug     -   490 a base portion     -   490 b extension portion     -   490 c recess     -   492 upper lug     -   492 a base portion     -   492 b extension portion     -   492 c recess     -   494 receiving channel     -   495 alignment tab     -   496 mounting structure     -   497 slot or channel     -   496 a base portion     -   496 b flange portion     -   496 c recess     -   496 d recess     -   498 aperture     -   499 mounting structure     -   506 patch panel frame     -   550 cable management feature 

1-41. (canceled)
 42. A tray assembly for mounting within a telecommunications chassis, the tray assembly comprising: a) a rotatable tray having a base wall from which a front side wall and rear side wall extend to define a storage area, the rotatable tray being rotatable about a first pivot axis proximate a first side of the tray; and b) an attachment arrangement integrally formed as part of the rotatable tray and being for retaining a telecommunications arrangement within the storage area, the attachment arrangement including a first attachment feature formed in the rear side wall, a second attachment feature formed in the base wall, and a third attachment feature formed in the front side wall.
 43. The tray assembly of claim 42, wherein the first attachment feature includes a first receiving structure for receiving a correspondingly shaped portion of the telecommunications arrangement.
 44. The tray assembly of claim 42, wherein the first attachment feature includes a first tab structure for latching with a portion of the telecommunications arrangement.
 45. The tray assembly of claim 42, wherein the first attachment feature includes a first receiving structure for receiving a correspondingly shaped portion of the telecommunications arrangement and includes a first tab structure for latching with the telecommunications arrangement.
 46. The tray assembly of claim 43, wherein the first receiving structure includes a pair of slots.
 47. The tray assembly of claim 42, wherein each of the first attachment feature, the second attachment feature, and the third attachment feature includes a receiving structure for receiving a portion of the telecommunications arrangement.
 48. The tray assembly of claim 42, wherein each of the first attachment feature, the second attachment feature, and the third attachment feature includes a tab structure for latching with the telecommunications arrangement.
 49. The tray assembly of claim 42, wherein each of the first attachment feature, the second attachment feature, and the third attachment feature includes a receiving structure for receiving a portion of the telecommunications arrangement and wherein each of the first attachment feature, the second attachment feature, and the third attachment feature includes a tab structure for latching with the telecommunications arrangement.
 50. A tray arrangement comprising: a) the tray assembly of claim 42; and b) a tray mount engaged with at least the first and second attachment features and including a plurality of trays rotatably secured to the tray mount.
 51. A tray arrangement comprising: a) the tray assembly of claim 42; and b) a cable management structure engaged with at least the first and third attachment features. 